174 REV. PROF, G. HENSLOW ON THE 
Commencing with a complete cylinder in the pedicel (1), it 
supplies ten or more cords for the five sepals (2). There remain 
five large cords of a horseshoe shape (3); the central or terminal 
part of each supplies a petal (3, 4, p-), before entering the latter 
it branches in a pedate manner (5) forming the large number of 
veins of the petal. There now remain ten cords more or less 
connected by portions inwardly convex (6, c.). They are arranged 
in pairs (6, ph.). Each pair gives rise to a phalanx, which is 
thus seen to be of double origin. 
It would seem that the way the petaline cord increases to 
furnish the petal (5) is repeated in the case of the stamens, 
though each branch now enters a separate filament. 
As soon as the stamens have been supplied, the five remaining 
groups commence to coalesce into three, by two pairs uniting (7), 
forming three oval-shaped masses (8, 9). These supply the 
dorsal and placental cords as shown in figs. 10, 11. In figure 
12 the ovary-cells are just appearing (ov.), while the dorsal cord 
trifurcates. 
In small-flowered species with three phalanges, such as 
H. quadrangulare, montanum, tetrapterum, and perforatum, 
examined, there are ten principal cords for the sepals (as in 
figure 2), the petals being also formed as in the case described ; 
but now the five cords at once coalesce into three groups (13), so 
as to furnish the three phalanges of stamens. The phalanges 
having been supplied, there remain three masses of cords be- 
tween them. These supply the pistil as described above (14). 
Fig. 15 is taken from H. montanum, and shows particularly 
clearly the distribution of the cords for the petals (p.), the two 
branches of each phalanx (ph.), while the remaining portion is 
destined for the carpels (c.). These five carpellary cords will 
ultimately coalesce into three, as described above. 
IX. GERANIACER (PI. XXVI.).— Tribe Geraniem. xv. 
GERANIUM ROBERTIANUM has five cords in the pedicel (1). These 
bifurcate (2) and increase till a complete ring is formed which 
sends off from eight to ten cords for the sepals (3). Some sepals 
are slightly smaller than the others, so that the ten cords are not 
distributed equally within the sepals (4, sep.). Five glands (G) 
appear on the axis in front of the sepals; these have no cords, 
and are merely cellular protuberances. The petaline cords now 
appear, and there are ten staminal. These, however, are so 
